[lcdproc] pre8 and HD44780 woes

[N. Coesel]

At 14:20 4-8-00 -0400, you wrote:
>I'm having problems getting a HD44780 display working with pre8.  My
>parallel port is set to 0x378, irq 7, SPP on RH 6.1.  
>
>Here's what I've done so far;
>
>Wired HD44780 display (Optrex 20x2) per diagram on lcdproc homepage, double
>checked circuit with meter and verified pinout on lcd corresponds with
>schematic.
>
>Edited Makefile.config with following changes:
>/dev/ttys0 changed to /dev/lp0  
>commented out Matrix and Crystalfonts entries
>uncommented HD44780 section
>uncommented 0x378 entry and commented the other port entries
>
>Ran make
>
>Ran make install
>
>Ran LCDd as follows:	./LCDd -t 20x2 -d HD44780
>
>Nothing is displayed, I've ensured that a link was created from /dev/lcd to
>/dev/lp0

Are you sure port 378 is lp0? Officially 3BC is lp0, 378 is lp1 and 278 is
lp2. You can check this in /proc/ioports. There have been some changes in
the past. If my grey database serves me well, _newer_ Linux versions comply
with this numbering scheme. If you add a printerport at 3BC in an older
Linux systems, lp0 would change to lp1 and lp1 would change to lp2. Result:
you'll have to change your cables! I don't want to start a thread wether
this is a good thing or not. Let's just assume the kernel-guys (and girls?)
made a good decision.

Nico Coesel

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